KT/V: the denominator dilemma.
D006801:Humans; D007676:Kidney Failure, Chronic / Q000628:therapy*; D008954:Models, Biological; D010531:Peritoneal Dialysis, Continuous Ambulatory / Q000379:methods* / Q000706:statistics & numerical data*; D006435:Renal Dialysis / Q000379:methods* / Q000706:statistics & numerical data*